Contact lens for communication

Abstract

A contact lens for communication includes a display unit, an antenna element, a first ring-shaped metal structure, a second ring-shaped metal structure, and a transparent element. The antenna element is adjacent to the display unit. The display unit and the antenna element are surrounded by the first ring-shaped metal structure. The first ring-shaped metal structure is surrounded by the second ring-shaped metal structure. The display unit, the antenna element, the first ring-shaped metal structure, and the second ring-shaped metal structure are disposed on the transparent element.

What is claimed is: 
     
         1 . A contact lens for communication, comprising:
 a display unit;   an antenna element, wherein the antenna element is adjacent to the display unit;   a first ring-shaped metal structure, wherein the display unit and the antenna element are surrounded by the first ring-shaped metal structure;   a second ring-shaped metal structure, wherein the first ring-shaped metal structure is surrounded by the second ring-shaped metal structure; and   a transparent element, wherein the display unit, the antenna element, the first ring-shaped metal structure, and the second ring-shaped metal structure are disposed on the transparent element;   wherein each of the first ring-shaped metal structure and the second ring-shaped metal structure is used as a director of the antenna element, so as to modify a radiation pattern of the antenna element.   
     
     
         2 . The contact lens as claimed in  claim 1 , wherein the antenna element covers an operational frequency band, and the operational frequency band is higher than or equal to 60 GHz. 
     
     
         3 . The contact lens as claimed in  claim 2 , wherein a first distance between the antenna element and the display unit is shorter than or equal to 0.25 wavelength of the operational frequency band. 
     
     
         4 . The contact lens as claimed in  claim 2 , wherein a second distance between the first ring-shaped metal structure and the second ring-shaped metal structure is from 0.1 to 0.2 wavelength of the operational frequency band. 
     
     
         5 . The contact lens as claimed in  claim 1 , wherein the display unit substantially has a hexagonal shape or a circular shape. 
     
     
         6 . The contact lens as claimed in  claim 1 , wherein the display unit comprises a metal sidewall, and the metal sidewall is used as a reflector of the antenna element. 
     
     
         7 . The contact lens as claimed in  claim 1 , wherein the antenna element comprises:
 a plurality of radiation elements, wherein the radiation elements are separate from each other and are adjacent to the display unit.   
     
     
         8 . The contact lens as claimed in  claim 1 , wherein the first ring-shaped metal structure substantially has a circular ring shape. 
     
     
         9 . The contact lens as claimed in  claim 8 , wherein a diameter of the first ring-shaped metal structure is greater than a pupil diameter of an eyeball. 
     
     
         10 . The contact lens as claimed in  claim 8 , wherein a diameter of the first ring-shaped metal structure is greater than an iris diameter of an eyeball. 
     
     
         11 . The contact lens as claimed in  claim 1 , wherein each of the first ring-shaped metal structure and the second ring-shaped metal structure is used as a director of the antenna element. 
     
     
         12 . The contact lens as claimed in  claim 1 , wherein each of the first ring-shaped metal structure and the second ring-shaped metal structure is an energy storage element. 
     
     
         13 . The contact lens as claimed in  claim 12 , wherein the energy storage element is a thin film photovoltaic cell. 
     
     
         14 . The contact lens as claimed in  claim 1 , wherein each of the first ring-shaped metal structure and the second ring-shaped metal structure comprises a plurality of discontinuous metal segments. 
     
     
         15 . The contact lens as claimed in  claim 1 , further comprising:
 a third ring-shaped metal structure, wherein the second ring-shaped metal structure is surrounded by the third ring-shaped metal structure.   
     
     
         16 . The contact lens as claimed in  claim 15 , further comprising:
 a fourth ring-shaped metal structure, wherein the third ring-shaped metal structure is surrounded by the fourth ring-shaped metal structure.   
     
     
         17 . The contact lens as claimed in  claim 1 , wherein the transparent element is made of a hydrogel material.